Roller gear-wheel.



G. H. WILSON.

ROLLER GEAR WHEEL. APPLICATION man OCT. 4, 1913.

LRQQQQ YO Patented May 25, 1915.

UNITED TA A @EQE GEORGE 151. WILSON, OF MINNEAPOLIS, MINNESOTA.

ROLLER GEAR-WHEEL.

Application filed. October 4, 1913.

To all whom it may concern:

Be it known that I, GEORGE H. VVILsoN, a citizen of the United States,residing at Minneapolis, in the county of Hennepin and State ofMinnesota, have invented certain new and useful Improvements in RollerGear-VVheels, of which the following is a specification.

My invention relates to an improvement in roller gear wheels, and hasfor its object to provide a device by which the rollers in a roller gearwheel may be lubricated with hard oil in a very efficient manner withrespect to replenishment of the lubricant.

A. further object is to provide such a lubricating means so placed thatthe working action of the lubricating material will tend to force dirtand grit out and away from the roller bearing. And a further object isto provide a roller gear wheel in which new rollers may be placed with aminimum of trouble and time.

The rollers of roller gear pinions are subject to heavy wear and tobreakage, and in ordinary roller gear pinions, when one or two rollersbreak down or all become worn out, the wheel is thrown away and a newone purchased on account of the lack of new rollers on hand or thedifliculty of inserting them in the wheel.

The full objects and advantages of my invention will appear inconnection with the detailed description thereof and are particularlypointed out in the claims.

In the drawings, illustrating the application of my invention in oneform,Figure 1 is a plan view of a pinion showing my invention as itappears when in use. Fig. 2 is a transverse section showing in detailthe method and working of my lubricating device. Fig. 3 is an end viewof a pinion showing my device partly broken away.

This pinion comprises a hub 8, 9, consisting of two nearly duplicatesections 8 and 9, divided transversely in an irregular manner so thatthe sections interlock. As shown, one section 8 has a recess 14 intowhich is fitted a lug 15 on the abutting section 15. One hub section iskeyed to the shaft 10 by a key 2 1. Integral with hub section 8 at theend thereof, is a thick flange 11, and the other section 9 is likewiseprovided with a similar flange 13. The sections thus described aresecured together with bolts 16, shown in Fig. 3.

The teeth of this gear wheel are formed of Specification of LettersPatent.

Patented May 25, Serial No. 793,410.

rollers 17 which are inserted into bearings 18 in each flange so thatwhen the rollers 17 are lnserted lnto the bearings 18 and the bolts 16are drawn up tight a gear wheel is formed having its teeth spaced theright distance apart but formed of rollers and constructed to readilyturn in the bearings.

From each end of each roller bearing 18, an oil duct 21 leads in anaxial direction to the lateral face or end of the pinion. Mount ed uponeach end of the pinion by means of screws 22, is an annular cap 19,which snugly fits the contacting surface except that each cap 19 isprovided with an interior annular groove 20, which has the function of areservoir for lubricant, either hard or fluid. The grooves 20 of coursecover the entrances of the distributing duets 21. Each cap is providedwith a feed-screw 23, by turning which forwardly, hard oil may be fedinto ducts 21. Liquid oil in escaping from the roller bearings 18 willcarry out dust and sand, thus prolonging the life of the journals andbearings. This permits the use of the roller in exposed position forlong periods of time without danger of the cutting out of the rollers.Should the rollers become worn or damaged it will be found very easy toreplace same by unbolting the sections and removing the old rollers.

At the proper intervals the reservoirs 20 are quickly refilled with hardoil by removing them and placing it in the grooves 20. If fluidlubricant is used, simply remove the screws 23, fill, and replace saidscrews, or corks or wooden plugs can be used.

To replace a roller or rollers, the nuts are removed from the four bolts16 and the hub section that is not keyed to the shaft is slipped uponthe shaft until the roller or rollers can be removed.

I claim:

1. A roller gear wheel comprising a hub which is transversely dividedinto separable sections, each section being provided with an annularflange, the flanges having correspondingly positioned bearing recessesextending from the inner surface of said flange to a point adjacent theouter surface thereof and having lubricating ducts extending from thecenter of said recesses to the outside of the flange, roller teethhaving their ends journaled'in corresponding pairs of said recesses,said teeth being shorter than the distances between the bottoms of saidpairs of recesses, and a circular channel member removably secured tothe ends of said flanges so that said members Will overlie and incloseall of said ducts and a closed channel in communication With said ductsWill be formed between the channel of the member and the face of theflange.

2. A roller gear Wheel comprising a hub Which is transversely dividedinto separable sections, each section being provided With an annularflange, the flanges having correspondingly positioned bearing recessesextending from the inner surface of said flange to a point adjacent theouter surface thereof and having lubricating ducts extending from I thecenter of said recesses to the outside of the flange, roller teethhaving their ends journaled in corresponding pairs of said recesses,said teeth being shorter than the distance between the bottoms of saidpairs of recesses, a circular channel member removably secured to theends 'of said flanges so 7 that said member Will overlie and inclose allof said ducts and a closed channel in communication With said ducts Willbe formed between the channel of the member and the face of the flange,and a screw-bolt threaded through the Wall of said member and into saidchannel for forcing lubricant into the ducts. v g

In testimony whereof I affix my signature in presence of tWo Witnesses.

GEORGE H. WiLs-oN.

Witnesses H. A. BOWMAN, ROBERT W-. MUIR.

O'opies of'this patentimay be obtained for five cents each, byaddressing the Commissioner of Patents, Washington-D. G. V t

